from tkinter import *
x = int(input("Введите начальную координату X:"))
y = int(input("Введите начальную координату Y:"))
n = int(input("Введите коэффициент увеличения N:"))
def figura(x,y):
    canvas.create_polygon([(0*n+x,0*n+y),(0*n+x,20*n+y+20),(30*n+x+30,20*n+y+20),(30*n+x+30,0*n+y),(20*n+x+20,0*n+y),(20*n+x+20,10*n+y+10),(10*n+x+10,10*n+y+10),(10*n+x+10,0*n+y),(0*n+x,0*n+y),])
if n == 0 and x>=0 and x<=500 and y>=0 and y<=500:
    pass
else:
    if n > 0 and 0*n+x>=0 and 0*n+y>=0 and 20*n+x<=500 and 20*n+y<=500:
        pass
    else:
        if n < 0 and 20*n+x>=0 and 20*n+y>=0 and 0*n+x<=500 and 0*n+y<=500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()
root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
figura(x, y)
root.mainloop()
